Availability and price helped make coal a major energy source for the U.S. and other countries. Now, concerns about its environmental impact, coupled with falling prices for other forms of energy, have led some to argue that coal has no future. Should we give up on coal? We’ll look at what might be done to make coal an acceptable source of energy. We’ll have two guests, both from the Illinois State Geological Survey, Massoud Rostam-Abadi and Scott Elrick.